Pre-eruption magma staging at the long-lived intraplate Dunedin Volcano, New Zealand
Publication Date
2022Journal Title
TERRA NOVA
ISSN
0954-4879
Publisher
Wiley
Language
en
Type
Article
This Version
AO
VoR
Metadata
Show full item recordCitation
Baxter, R. J., White, J. D., Brenna, M., & Ohneiser, C. (2022). Pre-eruption magma staging at the long-lived intraplate Dunedin Volcano, New Zealand. TERRA NOVA https://doi.org/10.1111/ter.12585
Description
Funder: NZ Federation of Graduate Women
Funder: University of Otago; Id: http://dx.doi.org/10.13039/100008247
Abstract
Abstract: The oldest‐known rocks of the eroded Dunedin Volcano (DV), New Zealand, active 16.0–11.0 Ma, were emplaced by penecontemporaneous explosive eruptions and intrusions of magmas with a remarkable range of compositions, including basanite, alkali basalt, trachyte and phonolite. The compositional diversity of magmas emplaced in rapid succession during the earliest development of the volcano signify the existence of a complex magmatic system and highly evolved magmas, typical of those attributed to mature magmatic systems; here it developed in concert with the volcano's surface eruptions. We infer that multiple deep and shallow reservoirs were suddenly tapped as volcanism commenced. DV repeatedly erupted the same range of magmas over 5 Myr, suggests that these distributed reservoirs failed to significantly integrate through millions of years of slow volcano growth.
Keywords
RESEARCH ARTICLE, RESEARCH ARTICLES
Identifiers
ter12585, ter-2021-0049.r1
External DOI: https://doi.org/10.1111/ter.12585
This record's URL: https://www.repository.cam.ac.uk/handle/1810/334578
Rights
Licence:
http://creativecommons.org/licenses/by-nc-nd/4.0/
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